Deep cleaning a set of very dirty PD41A carbs for a '77 CB750 K7 project and found parts not shown in the factory parts fiche anywhere. Throttle shaft opening in the carb body has a bushing that fell out after an ultrasonic cleaning. Carb was so dirty I didn't notice the sleeve or the felt dirt seal that sits between the sleeve and a lip in the shaft opening on the carb body. The gap in the throttle shaft opening photo is where the seal goes. These parts are from the #1 carb although the seal in my hand is actually from the #4 carb. The #1 seal was ruined by the ultrasonic cleaning. Finding the sleeve and soggy fiber blob in the parts basket was my first clue there was something I missed when I took the carb apart.
The other part not shown in any diagrams is the small white semi-circular plastic bushing thingy that clips into a groove in the choke shaft.
Looking for sources to buy replacements for the felt seal and plastic bushing if anybody who has replaced these before remembers where they got them. I'm thinking someplace sells this type of seal in a close enough if not exact size. The white plastic things will probably have to come from junk donor carbs since those look to be pretty unique items. Didn't see them in any of the vintage 750 parts or Keihin parts sites.
